Rotary Axle Structure for Portable Computers

1. A rotary axle structure for a portable computer that has a display device pivotally engaged with a main body, comprising: a plurality of pivotal shafts turnable about a first axis connecting to the display device and having respectively a leaning element; and a swivel apparatus swivelable about a second axis connecting to the main body and having a sloped element; wherein the leaning element moves on the sloped element when the swivel apparatus swivels about the second axis such that the distance between the leaning element in the direction of the first axis is altered.

2. The rotary axle structure for a portable computer of claim 1 , wherein the leaning element is a leaning section.

3. The rotary axle structure for a portable computer of claim 1 , wherein the sloped element is a lifting path.

4. The rotary axle structure for a portable computer of claim 1 , wherein the swivel apparatus comprises: a first member which has two lugs and a strut, the lugs being located on one end of the first member to allow the pivotal shafts to run through, the strut being located on another end of the first member; a second member located on the main body and coupled on the strut having a swivel edge on one end thereof, the swivel edge having an indented notch corresponding to the leaning element, the sloped element being located on the swivel edge; an elastic element coupling on the strut and having one end in contact with the second member; and a third member coupling on the strut and fastening to the first member and being in contact with another end of the elastic element; wherein when the display device is lifted and opened relative to the main body, the leaning element turns on the indented notch, when the display device is swiveled, the leaning element is lifted from the indented notch to the sloped element and moved away from the indented notch such that the first member and the third member are lifted relative to the second member with the elastic element retaining the first member to allow the leaning element in contact with the swivel edge thereby the display device is lifted and moved away from the main body during swiveling.

5. The rotary axle structure for a portable computer of claim 4 , wherein the pivotal shaft includes two shafts each running through the lug.

6. The rotary axle structure for a portable computer of claim 5 , wherein the shaft has one end forming screw threads to engage with a nut for fastening after having run through the lug and with the leaning element corresponding to the swivel edge.

7. The rotary axle structure for a portable computer of claim 5 , wherein the shaft is hollow in the interior and has an aperture formed on the side wall leading to the interior, the members of the swivel apparatus having respectively an axle hole communicating with one another for housing cables linking the display device and the main body.

8. The rotary axle structure for a portable computer of claim 4 , wherein the two lugs of the first member are symmetrical.

9. The rotary axle structure for a portable computer of claim 4 , wherein the second member has two anchor elements extending from two sides thereof, each anchor element having a hole to receive a screw for fastening the second member to the main body.

10. The rotary axle structure for a portable computer of claim 4 , wherein the second member has a axle hole for coupling with the strut, the axle hole being formed by two semi-circular holes of different diameters, the first member having a retaining element located on another end turnable only in the semi-circular hole of a larger diameter.

11. The rotary axle structure for a portable computer of claim 4 , wherein the third member has an annular groove for holding another end of the elastic element.

12. The rotary axle structure for a portable computer of claim 4 , wherein the third member has a plurality of apertures, the first member having a plurality of screw holes corresponding to the apertures to engage with screws for fastening the third member to the first member.

13. The rotary axle structure for a portable computer of claim 4 , wherein the elastic element is a spring.

14. The rotary axle structure for a portable computer of claim 4 further having a protection cap located above the first member.

15. The rotary axle structure for a portable computer of claim 14 , wherein the protection cap has openings corresponding to the pivotal shafts to allow the pivotal shafts to pass through when the protection cap is mounted on the first member.